Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
nhung cong » dung cong, hang cong, nhung don
hieu lang » chieu sang, hieu quang, nhieu tang
hanh mang » nhanh mang, hanh trang, nhanh lang
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap
ho hieu » ho chieu, hoi hieu, nho hieu
mang va » mang vua, hang va, bang va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh mang va ((nhung cong) OR (thong cong)) tan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - hanh mang va ((nhung cong) OR (thong cong)) tan toan cau".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh mang va ((nhung cong) OR (thong cong)) tan toan cau*.